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Finding the Fourth Proportional to 123,840.83, 170,898.84 and 67,252.61

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Solution

The fourth proportional to 123,840.83, 170,898.84 and 67,252.61 is: 92,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,840.83 : 170,898.84 = 67,252.61 : x
  2. Step 2: Convert to fraction form
    123,840.83/170,898.84 = 67,252.61/x
  3. Step 3: Cross multiply
    123,840.83x = 170,898.84 × 67,252.61
  4. Step 4: Simplify right side
    123,840.83x = 11,493,393,035.97
  5. Step 5: Solve for x
    x = 11,493,393,035.97/123,840.83
  6. Step 6: Final answer
    x = 92,807.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.